Cooling cabinet



F. M. GRHAM June 19, 192s. y 1,674,101

COOLING CABINET Filed sept. 15, 1926 Patented June 19, 1928-.

UNITED STATES PATENT OFFICE.

FRANK M. GRAHAM,

COOLING Application filed September My invention relates to cooling cabinets.

lt is my purpose to provide a cooling cabiuct of very simple and consequently inexpensive construction.

More particularly, it .is my object to provide such a cooling cabinet having a casing or cabinet member of the usual type provided with insulated walls `with an inte rior cooling compartment, containing a storage member preferably removable, provided with tubular passages up and down its Walls for insuring constant circulation and cooling ot the air in the storage compartment for therebymaintaining the temperature in the upper part of the storagecompartment as nearly as possible the same as in the lower part. i;

With these and other objects in view, my invention consists in the construction, arg rangement and combination of the various parts of my cooling cabinet, whereby the objects contemplated are attained, as hereina'fter more fully set forth, pointed out in lmy claims, and illustrated in the accompanying drawings, in which:

Figure 1 shows a top or plan view of a cooling cabinet embodying my invention.

Figure 2 is a detail, sectional view taken on the line Q-`2 of Figure l.

` Figure 3 is a sectional view taken on the line 3-3 of Figure 2; and

Figure l is a perspective vievv of the re movable storage compartment which in the embodiment ot the invention here shown divided by a partition into tivo portions or sections.

In the accompanj-:ing drau'ings,'ll have used the reference numeral 10 to indicate generally a cabinet or casing l'iaving its walls and bottom preferably of suitable heat insuy lating construction. rThe details of this con struction do not Yform part of my present invention. l

The cabinet 10 'has a fixed cover member l1 and a removable heat insulated cover member 1Q formed With one or more suitable openings 18. For the openings 18 l provide the smaller, removable covers 14.

The interior of the cabinet 10 is provided With a rust-proof or other leak prooilining 1G, at its bottom and sides thereby forming a refrigerant compartment 15 between the lining 16 and the walls of the storage compartment 17. The cooling compartment 15 may be cooled in any suitable Way.

For the purpose of illustrating my inor OTTUMWA, IOWA.

CABINET.

15, ieee, ysei-m1 no. 135,555.

vention, .l have shown al device o the type adapted to use ice and brine.

lveceived `in the cooling compartment 15 and preferably spaced from the side Walls thereof, l place a storage compartment or member 17, which may be divided by a partition IS into two or more sections or parts. ihc storage compartment 17 isvpreferably made' in the form of a can or container of rust-primil metal. It may be provided with cross bars or arms 19, Which serve to space the storage compartment 17 from the side walls oft the cabinet 10.

'lhe lining 1G may be provided With lugs or projecting oars 20, which may be secured to Athe spaced arms 19 by means of pins 21 or any suitable devices for thus preventing floating or accidental movement of the storage compartment toward the ends "ofthe cabinet 10.

The cooling `compartment y15 around the storage compartment 17 may be filled to a proper height with ice and brine 22.

' rlf'he Wallsl of the storage compartment 17 are provided with a suitable number of ver# tical, tubular flue members 23, the total capacity of which is much smaller than the air capacity of the storage compartment.

rlfhe tubular flue members 23 areclosed at their upper and lowerends except for the provision of vents 2i and 25 by which communication is afforded between the upper ends oi' the ihre members Q3 and the upper portion of the storage compartment and the loner ends ot the flue members 23 and the lower part of the storage compartment. The ihre members L3 could terminate above the l"top oi the storage compartment 17 `and be open at their tops whereby air could be drawn trom a higher elevation Jfor extending the air circulation nearer thetop of the cabinet.

l have shown in Figure 1, ice cream cans' parts of the almost the universal custom to pack ice cream in lrelatively tall cans. AS result ot this practice, there arises the problem of keeping the ice cream equally cold at the upper part and lower part of its volume. On account ot the tendency ot the warmer rair to lemain in the top of any container, it is Found that 'frequently the upper part ot the body ot' ice cream is soft, even though that near the bottom is well frozen and hard.

lVhere a temperature is maintained near the bottom ot' the container low enough to keep the upper part ot the ice cream well frozen, the lower part ot the ice cream is; liliely to be frozen too hard.

It is therefore desirable that a circulation of air should be maintained, such as will result in maintaining a uniform temlierature throughout the height of the container, in which the ice cream is kept.

lVith my device, I lind that Such uniformity ot temperature can be more nearly approximated by providing the vertical [lue members 23 through which air from the storage` conpartmcnt for ice cream or the like may circulate.

The air in the top of the storage, compartment being somewhat higher in temperature than that in the bottom will pass into the tlue members 23, as indicated by the arrows in Figure 3, thence downwardly through the flue members, and thence through the vents 25 into the storage compartment.

Vith these conducting flue members 23 extending down through the refrigerant, the small amount of air admitted to them will be cooled to a lower temperature than the greater amount of air in the storage compartment will be cooled by the side walls thereof. The air in the flue members 23 beeomeb` colder and heavier and settles through the opening@` 25 thereby drawing the warmer and lighter air through the openings il. The intake of these conducting passages is preferably at a level slightly higher than the top ot the ordinary ice cream cans.

There will thus be created a continuous circulation of air below the level ot the intakes dowllwardly through the iiue members 23 and upwardly through the storage compartment as high as the inlets Q4.

There are a number of other advantagesl inherent in the present structure. It is extremely Simple and the circulating flue members are formed integral with the storage compartment, so as to be removable therewith. The circulation is largely confined to the which is desirable.

The circulation is somewhat. drier than is the case where there is circulation through an ice compartment, and in the storage ot' certain loods and produits, thin1 a .aub stantial advantage.

As here shown, the (lue memberf-1 are sub jected on three sides to immediate contact with the brine, so as to get the largest benefit ot radiation. i

It will be obvious that Some. modi'lcatiom might be. made in the construction and arrangement ol the parte ot` my improved cooling cabinet without departing from the real Iapirit and purpose ot my invention.

l claim:

1. In a cooling cabinet, an outer cabinet member having in its interior a cooling compartment and an interior storage. compartment spaced from the walls of the cooling compartment and having walls provided with substantially vertical llue members for the. circulation ot air, said flue members each comprising three side mcmbera` secured to a wall of the storage coml'iartment whereby the storage compartment forme` a t'oin'th wall, said l'lue members communicating at their upper and lower ends respectively with the, upper and lower parts of' the storage compartment.

l 1n a cooling cabinet, an outer cabinet member having its interior a cooling compartment and an interior storage compartment spaced from the walls ol the cooling compartment and having walls provided with substantially vertical flue members for storage conipartment,

the circulation of air, said flue members being closed at their upper and lower ends, except that the storage compartment is provided with openings (,-onnnunicating with said flue members near the top and bottom respectively ot auch walls.

35. ln a cooling cabinet, an outer cabinet member having in its interior a refrigerant compartment containing a refrigerant and an interior storage compartment having walls provided with substantially vertical outside tine members extcmling through lsaid refrigerant and communicating with the interior o1" the storage compartment at their upper and lower ends whereby air may be cooled in said fine members and circulate therethrough and through said storage compart-ment.

FRANK M. GRA HAM.

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